EP1885087A1 - Verfahren, Vorrichtung und Software zur Steuerung von Datenverkehr zwischen einem ersten und einem zweiten Netzwerkgerät - Google Patents

Verfahren, Vorrichtung und Software zur Steuerung von Datenverkehr zwischen einem ersten und einem zweiten Netzwerkgerät Download PDF

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Publication number
EP1885087A1
EP1885087A1 EP06118334A EP06118334A EP1885087A1 EP 1885087 A1 EP1885087 A1 EP 1885087A1 EP 06118334 A EP06118334 A EP 06118334A EP 06118334 A EP06118334 A EP 06118334A EP 1885087 A1 EP1885087 A1 EP 1885087A1
Authority
EP
European Patent Office
Prior art keywords
data
priority data
low priority
transmitted
computer network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06118334A
Other languages
English (en)
French (fr)
Inventor
Ivan Tsui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ISS Manufacturing Ltd
Original Assignee
ISS Manufacturing Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ISS Manufacturing Ltd filed Critical ISS Manufacturing Ltd
Priority to EP06118334A priority Critical patent/EP1885087A1/de
Priority to US11/506,446 priority patent/US20080031134A1/en
Publication of EP1885087A1 publication Critical patent/EP1885087A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
    • H04L47/2433—Allocation of priorities to traffic types
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2441—Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/52—Queue scheduling by attributing bandwidth to queues
    • H04L47/522—Dynamic queue service slot or variable bandwidth allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/56—Queue scheduling implementing delay-aware scheduling
    • H04L47/564—Attaching a deadline to packets, e.g. earliest due date first
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/62—Queue scheduling characterised by scheduling criteria
    • H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
    • H04L47/6255—Queue scheduling characterised by scheduling criteria for service slots or service orders queue load conditions, e.g. longest queue first

Definitions

  • the present invention relates to a method, a device and software for controlling the data traffic between a first computer network and a second computer network.
  • computers usually work connected to each other (to exchange data) in internal network (LAN) and/or through the internet (WAN).
  • LAN internal network
  • WAN internet
  • connection through the internet is performed dividing in packets the data to be transmitted each containing both service information (for example the address of the particular computer in the WEB) and the data to be transmitted.
  • service information for example the address of the particular computer in the WEB
  • the packets are sent through the internet and, each of them independently the other, reach the addressee where the data are divided from the service information and are recollected.
  • Congestion typically occurs where multiple links fed to a single link, such as where internal LANs are connected to WAN links.
  • Congestion also occurs at routers in core networks where nodes are subjected to more traffic than they are designed to handle.
  • TCP/IP networks such as the internet are especially susceptible to congestion because of their basic connectionless nature, there are no virtual circuits with guaranteed bandwidth, packets are injected by any host at any time and are variable in size, which make predicting traffic patters and providing guaranteed services impossible.
  • the technical aim of the present invention is therefore to provide a method, a device and software by which the said problems of the known art are eliminated.
  • an object of the invention is to provide a method, a device and software which allows reliability of data transmission.
  • Another object of the invention is to provide a method, a device and software implementing a no need to configure device.
  • the method for controlling the data traffic between a first computer network 1 and a second computer network 2 connected to each other through the internet 3 comprises the steps of classifying the data to be transmitted as high and low priority data and transmitting the high priority data within a pre-fixed temporal interval from the classification, whereas the low priority data are transmitted only when enough bandwidth is available.
  • data packets are re-scheduled and re-queued to ensure reliability of transmission quality.
  • Low priority data are transmitted in accordance with a random early detection and/or a time-span rule.
  • each bucket comprises data originating from one computer of a computer network (for example fig. 2 shows seven buckets), of course such step is not needed if only one computer is provided because all the data of such computer constitute the data of a bucket.
  • the data related to the voice transmission are classified as pre-high priority data and the other data are classified as pre-low priority data.
  • the pre-high priority data are transmitted to the classification whereas the pre-low priority data are stored in a memory until there is no pre-high priority data to be transmitted anymore; in such a case (i.e. when there is no pre-high priority data to be transmitted) also the pre-low priority data are transmitted.
  • the method according to the invention is implemented by a device 10 comprising a classifier 11 arranged to classify the data to be transmitted as high and low priority data and a scheduler 12 arranged to handle the high and low priority data for transmission and to transmit the high priority data within a pre-fixed time from classification and the low priority data only when enough bandwidth is available.
  • the device also comprises, between the classifier and the scheduler, a first RAM memory 13 arranged to store the low priority data before they are transmitted and downstream of the scheduler a BWM 15 arranged to automatically detect the bandwidth and adjusting the settings of the framework controlling the traffic.
  • a pre-classifier 17 arranged to divide the data originating from a computer network in buckets and to classify the data related to the voice transmission as pre-high priority data and the other data as pre-low priority data.
  • the device also comprises a second RAM memory 18 arranged to store the pre-low priority data before they are transmitted and a round robin 19 arranged to transmit the high and low priority data from the RAM memory to the classifier 11 according to a prefixed rule (discussed in the method) .
  • the method is implemented by software code portions.
  • the data coming into and from a LAN are divided at the pre-classifier 17 and are stored (for each PC of a LAN) as high and low pre-priority data in the RAM memory 18; the data relating to the voice communication are classified as pre-high priority data whereas other data (for example data relating to files which have been downloaded at the same time) are classified as pre-low priority data.
  • the pre-high priority data are transmitted through the round robin 19 to the classifier 11 where they are handled (transmitted or received) within a prefixed time.
  • the pre-low priority data are transmitted when there are no pre-high priority data to be transmitted at the round robin 19 and the low priority data are only transmitted when enough bandwidth is available.
  • the quality of the voice communication is not reduced by the contemporaneous downloading of files, because the data related to the voice communication are always handled within a pre-fixed time limit able to guarantee the correctness of the communication.
  • the method, the device and the software according to the invention are particularly advantageous because they allow both voice conversation by the internet and files downloading without the one negatively affecting the other.
EP06118334A 2006-08-02 2006-08-02 Verfahren, Vorrichtung und Software zur Steuerung von Datenverkehr zwischen einem ersten und einem zweiten Netzwerkgerät Withdrawn EP1885087A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06118334A EP1885087A1 (de) 2006-08-02 2006-08-02 Verfahren, Vorrichtung und Software zur Steuerung von Datenverkehr zwischen einem ersten und einem zweiten Netzwerkgerät
US11/506,446 US20080031134A1 (en) 2006-08-02 2006-08-18 Method, device and software for controlling the data traffic between a first computer network and a second computer network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06118334A EP1885087A1 (de) 2006-08-02 2006-08-02 Verfahren, Vorrichtung und Software zur Steuerung von Datenverkehr zwischen einem ersten und einem zweiten Netzwerkgerät

Publications (1)

Publication Number Publication Date
EP1885087A1 true EP1885087A1 (de) 2008-02-06

Family

ID=37110342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06118334A Withdrawn EP1885087A1 (de) 2006-08-02 2006-08-02 Verfahren, Vorrichtung und Software zur Steuerung von Datenverkehr zwischen einem ersten und einem zweiten Netzwerkgerät

Country Status (2)

Country Link
US (1) US20080031134A1 (de)
EP (1) EP1885087A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6104700A (en) * 1997-08-29 2000-08-15 Extreme Networks Policy based quality of service
US6570883B1 (en) * 1999-08-28 2003-05-27 Hsiao-Tung Wong Packet scheduling using dual weight single priority queue
US20060045011A1 (en) * 2002-11-26 2006-03-02 Aghvami Abdol H Methods and apparatus for use in packet-switched data communication networks

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6515963B1 (en) * 1999-01-27 2003-02-04 Cisco Technology, Inc. Per-flow dynamic buffer management
WO2002062013A2 (en) * 2001-01-30 2002-08-08 Nomadix, Inc. Methods and systems providing fair queuing and priority scheduling to enhance quality of service in a network

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6104700A (en) * 1997-08-29 2000-08-15 Extreme Networks Policy based quality of service
US6570883B1 (en) * 1999-08-28 2003-05-27 Hsiao-Tung Wong Packet scheduling using dual weight single priority queue
US20060045011A1 (en) * 2002-11-26 2006-03-02 Aghvami Abdol H Methods and apparatus for use in packet-switched data communication networks

Also Published As

Publication number Publication date
US20080031134A1 (en) 2008-02-07

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